50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
const newid = require("./newid")
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// bypass the main application db config
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// use in memory pouchdb directly
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const { getPouch, closePouchDB } = require("@budibase/backend-core/db")
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const Pouch = getPouch({ inMemory: true })
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exports.runView = async (view, calculation, group, data) => {
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// use a different ID each time for the DB, make sure they
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// are always unique for each query, don't want overlap
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// which could cause 409s
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const db = new Pouch(newid())
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try {
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// write all the docs to the in memory Pouch (remove revs)
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await db.bulkDocs(
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data.map(row => ({
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...row,
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_rev: undefined,
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}))
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)
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let fn = (doc, emit) => emit(doc._id)
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eval("fn = " + view.map.replace("function (doc)", "function (doc, emit)"))
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const queryFns = {
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meta: view.meta,
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map: fn,
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}
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if (view.reduce) {
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queryFns.reduce = view.reduce
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}
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const response = await db.query(queryFns, {
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include_docs: !calculation,
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group: !!group,
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})
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// need to fix the revs to be totally accurate
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for (let row of response.rows) {
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if (!row._rev || !row._id) {
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continue
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}
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const found = data.find(possible => possible._id === row._id)
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if (found) {
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row._rev = found._rev
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}
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}
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return response
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} finally {
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await db.destroy()
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await closePouchDB(db)
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}
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}
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